HP 35s User Manual page 329

Now, solve to find the root:
Keys:
X


X
 
 

Note the difference between the last two estimates, as well as the relatively large
value for f(x). The problem is that there is no value of x for which f(x) equals zero.
However, at x = 1.99999999999, there is a neighboring value of x that yields an
opposite sign for f(x).
Example:
Find the root of the equation
As x approaches
Enter the equation as an expression.
Keys:

X4
X
Õ

Display:
_







, f(x) becomes a very large positive or negative number.
6
Display:

Your initial guesses for the root.
Selects Equation mode; displays
the equation.
Finds a root with guesses 0 and 5.
Shows root, to 11 decimal places.
The previous estimate is slightly
bigger.
f(x) is relatively large.
x
1 0
2
x 6
Selects Equation mode.
Enters the equation.
More about Solving
Description:
Description:
D-7